Automatic fire-shutter.



No. 678,678. Patented July l6, l90l. R. L. MGINTYBE.

AUTOMATIC FIRE SHUTTER.

(Application filed mm 2, 1900. 0 ll h) 2 Shoets$haet I.

No. 678,678. Patented July I6, IQUL R. L. EWBINTVRE.

AUTOMATIC FIRE SHUTTER.

(Application filed Jan. 2, 1900.)

2 Sheets-$heet 2.

(No Model.)

W my MW J M Is PEYERS co. mom-mum, WASHINGTON n c lUNirnn Sta i ns arnnir Orrrcn.

ROBERT LEWIS MGINTYRE, OF TORONTO, CANADA.

AUTOMATIC NEE-SHUTTER.

SPECIFICATION formingpart of Letters Patent No. 678,678, dated July 16, 1901. Application filed January 2, 1900. Serial No. 409. (N model.)

To all whom it may concern:

Be it known that 1, ROBERT LEWIS Meir TYRE, a British subject, residing at the city of Toronto, in the county of York, Province of Ontario, and Dominion of Canada, have invented a new and useful Automatic Attachment forFire Shutters and Doors, of which the following is a specification.

My invention relates to attachments to fire shutters or doors for closing them automatically to prevent the spread of fire as soon as the temperature is raised to a dangerous degree. I attain this object by the mechanism shown in the accompanying drawings, in which--' Figure l is one of a pair of closed fire-shut ters with attachments shown thereon. Fig. 2 is an end view of one of the closed shutters and attachments. Fig. 3 is a top view of one of the closed shutters and attachments. Fig. 4. is one of a pair of open fire-shutters with attachments. Fig. 5 is a top view of the said open shutter with attachments.

Similar letters refer to similar parts throughout the several views.

The fire-shutters Aare constructed of sheet iron or steel or of wood incased in sheet metal double seamed and securely fastened by nails and are swung on strap-hinges B, securely fixed at O to the adjoining wall. Springs such as are ordinarily used toclose doors and shutters are used.

In the drawings accompanying this specification is shown a spiral spring 1), securely held in place at the hinge O by the metal spring E, which can readily be turned aside from the outside of the building protected and the spring D removed. The shutter when closed is securely held in place by dogs F at the upper edge and O at the lower edge, which are so adjusted that the shutter may be opened either from the inside or outside by releasing the dogs from their catches. The upper dog F is placed in the recess H of the lintel and is pressed down over the up per edge of the shutter by the spring G to hold the shutter in place. The lower dog 0 is attached to the shutter by a staple and is held down by the weight of its head and holds the shutter closed on the catch shown at P. To the metal plate J, securely fixed to the adjoining wall, is attached by the staple K an eccentric catch M. The edge of the catch M toward the opening of the window is canted out, so that when the shutter is opened to the adjoining wall and the catch M is pressed down it securely holds the shutter open. One end of the spiral spring L is fixed to the upper limb of the staple K, and being wound around the lower limb of the staple has its other end attached to the catch M, through S, to raise it when the lower end of said catch M is released.

The staple K is adjusted so as to stop the catch M when released and prevent it from revolving and holding the shutter open.

To the lower end of catch M is attached a copper-plated steel wire Q, extending horizontally across the opening of the window protected by the fire-shutter. The wire Q is attached to a corresponding wire Q from a catch similar to M, holding open the open shutter of the pair by a metal ring R, fusible at a dangerous temperature.

The operation of the attachments is as fol lows: When the temperature at R is raised above the melting-point of the metal of the said ring R, the ring fuses, the wire Q falls, the catch M is released, turns about the lower limb of the staple K, and releases the shutter A, which is then closed by the spring D and is securely fastened by the dogs F and O.

The catch M may be placed so that wire Q crosses the upper part of the window-space or below the sill of-the window.

I am aware that self closing fire shutters and doors moving in vertical, horizontal, and inclined planes with counterpoises and with fusible plugs have been used. Therefore I do not claim any novelty for such features of my invention; but

hat I do claim as my invention, and tie sire to secure by Letters Patent, is-- The combination with fire doors or shut ters hung on spring closing-hinges, of eccentric catches arranged on the adjacent wall,- springs tending to disengage said catches from the shutters, the catches being normally held in their locking position by wires connected together by a link which fuses at a dangerous temperature, whereby said catches release the shutters and they are closed by the action of the spring-hinges, substantially as described.

ROBERT LEWIS TrlolNTYRE.

/Vitnesses:

A. J. Hucnns, T. S. MoNEnL. 

